VGA and DVI version support up to 1920 * 1080 @ 60Hz. -compatible version supports up to 4K (3840 * 2160) @ 60Hz, 1080P @ 120Hz. Need -compatible2.0 support. -compatible lock plate treasure ( mother) at 4K @ 30Hz, 2K @ 60Hz stable use. VGA and -compatible display virtual machine, dummy load. Specifically that the role is: to a display, The main use are: 1. Remote control of the computer screen resolution can be set very high, not the lowest resolution black screen state. 2. Scientific calculation of the graphics card to work properly, heat normal. 3. To solve the mining without reason to stop, the graphics do not work the problem. -compatible display the main advantages of the virtual machine: 1. Up to 4K resolution can be simulated, ie 3840 * 2160 resolution. 2. Small size, the latest chip, low power, no heat. 3. Support plug and play, hot plug. 4. No need to drive, support all . VGA display virtual machine is mainly to the old VGA interface or DVI-I analog interface to the host use.Highest resolution up to 1920*1080 Colour:random color , 't accept the specified color Material:Metal Package Contents: 10 x Virtual Display Adapter(The position of the silk screen text on the product may be different due to different batches) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.